A body of mass m kg starts falling from a distance 2R above the earth's surface. What is its kinetic energy when it has fallen to a distance 'R' above the earth's surface ? (where R is the radius of Earth)

A body of mass m kg falling from a distance 3R above the earth's surface. What is its kinetic enrgy when it reaches a distance 'R' above the surface of the earth of radius R and mass M ?

A body of mass m kg starts falling from a point 2R above the earth's surface. Its kinetic energy when its has fallen to a point 'R' above the earth's surface [R Radius of earth M-mass of earth, G-gravitational constant]

A body of mass 'm' kg starts falling from a point 2R above the Earth's surface. What is its K.E. When it has fallen to a point 'R' above the Earth's surface.

For two saatellitw at distance R and 7R above the earth's surface, the ratio of their

A body of mass m is thrown from a equal to radius of earth (R) from earth's surface. The change in potential energy when it reaches to a height equal to 2R from earth's surface is